| Description | Date | Identifier | |
| Table detailing the fusing currents for various gauges of copper wire. | 24th Jan 1919 | Box 61 \ 2 scan0417 | |
| Failures of the electrical system, wiring, and luggage carriers, following feedback from an American visit. | 11th Nov 1920 | Box 61 \ 2 scan0418 | |
| The correct fuse wire size for a new distribution board. | 13th Nov 1920 | Box 61 \ 2 scan0419 | |
| Comparison of different fuse wires against a standard tin fuse wire, showing their respective melting currents. | 17th Nov 1920 | Box 61 \ 2 scan0420 | |
| Incorrect amperage rating of a received supply of 30 S.W.G. fuse wire. | 17th Nov 1920 | Box 61 \ 2 scan0421 | |
| Fusing current and suitability of a specific fuse wire for a Lucas switchbox. | 8th Nov 1920 | Box 61 \ 2 scan0422 | |
| Internal request to order one pound of No. 30 S.W.G. soft copper fuse wire for a new distribution board. | 19th Nov 1920 | Box 61 \ 2 scan0423 | |
| Outlining suggested improvements to chassis wiring, including fuse fittings, junction box drainage, and wire clipping. | 19th Nov 1920 | Box 61 \ 2 scan0424 | |
| The quality and supply of fuse wire for Lucas switchboxes. | 3rd Dec 1920 | Box 61 \ 2 scan0425 | |
| Request to order a quantity of pure tin fuse wire for the Experimental Department. | 14th Dec 1920 | Box 61 \ 2 scan0426 | |
| Fuse wire failures in a Lucas switchbox due to heat from the cut-out windings and potential solutions. | 4th Dec 1920 | Box 61 \ 2 scan0427 | |
| Proposal to cut a hole in a box to improve air circulation and reduce the temperature of the cut-out windings. | 14th Dec 1920 | Box 61 \ 2 scan0428 | |
| Correspondence regarding fuse wire for Lucas switchboxes and suggestions for switchbox ventilation. | 8th Dec 1920 | Box 61 \ 2 scan0429 | |
| Experiments on the field fuse in a Lucas switchbox to test its current carrying capacity. | 13th Dec 1920 | Box 61 \ 2 scan0430 | |
| Confirming a modification to a switchbox for cooling and detailing tests for a new fuse and a Willard battery. | 13th Dec 1920 | Box 61 \ 2 scan0431 | |
| Instruction sheet confirming the receipt of a quantity of fuse wire from the stores. | 23th Dec 1920 | Box 61 \ 2 scan0432 | |
| Test report on the fusing currents of tin wire in a Lucas junction box. | 4th Jan 1921 | Box 61 \ 2 scan0433 | |
| Instruction sheet confirming receipt of 1lb of 30 S.W.G. copper wire for fuses from the stores. | 19th Jan 1921 | Box 61 \ 2 scan0434 | |
| Extract from a visit report regarding improvements to the 40/50 HP distribution board. | 12th Mar 1921 | Box 61 \ 2 scan0435 | |
| Complaining about the continual failure of Lucas fuse holders due to bad connections. | 11th Apr 1921 | Box 61 \ 2 scan0436 | |
| Failures of Lucas electrical fittings on post-war chassis. | 11th Apr 1921 | Box 61 \ 2 scan0437 | |
| The failure of fuse wire connections and a recommendation for an in-house improvement. | 11th Apr 1921 | Box 61 \ 2 scan0438 | |
| The adaptation of the Lucas Junction Box to use copper wire fuses instead of tin-lead. | 12th Apr 1921 | Box 61 \ 2 scan0439 | |
| The fitting of a Lucas junction box with R.R. design fuse holders in the Experimental Shop. | 13th Apr 1921 | Box 61 \ 2 scan0440 | |
| Proposed fuse clip design from Lucas for their junction box. | 25th Apr 1921 | Box 61 \ 2 scan0441 | |
| Letter to Lucas Electrical Company regarding the preference for the R.R. design of fuse holder over a proposed modification. | 28th Apr 1921 | Box 61 \ 2 scan0442 | |
| Extract from a report on a visit to Messrs. Lucas in Birmingham regarding the design of a junction box and fuse clips. | 4th May 1921 | Box 61 \ 2 scan0443 | |
| The fitting of special R.R. fuse clips to a Lucas junction box. | 9th Jun 1921 | Box 61 \ 2 scan0444 | |
| Delay in orders for a 40/50 chassis Lucas junction box and special fuse clips. | 11th Jun 1921 | Box 61 \ 2 scan0445 | |
| Extract from conference minutes regarding the design and modification of fuse holders in switchboxes and junction boxes. | 13th Jun 1921 | Box 61 \ 2 scan0446 | |
| Extract from a report on the 4-EX vehicle, discussing the pros and cons of earthed versus double wiring systems for the distribution board. | 17th Jun 1921 | Box 61 \ 2 scan0447 | |
| Extract discussing modifications to a Lucas dynamo, focusing on the switch box, fuses, switches and contacts. | 20th Apr 1921 | Box 61 \ 2 scan0448 | |
| Recommendation to fit new switchboxes, accumulator switches, and dynamo belt tension springs to new and existing cars. | 20th Apr 1921 | Box 61 \ 2 scan0449 | |
| Minutes of a conference with Lucas Electrical Co. Ltd. regarding the supply and issues with electrical equipment. | 22th Jun 1921 | Box 61 \ 2 scan0450 | |
| Meeting notes discussing component updates with Lucas, including converting machines, dynamo brushes, a Goshawk II electrical scheme, and a lamp bracket. | 23th Jun 1921 | Box 61 \ 2 scan0451 | |
| Copy of a letter from Joseph Lucas Ltd. regarding follow-up actions from a conference, including test reports and product modifications. | 23th Jun 1921 | Box 61 \ 2 scan0452 | |
| Difficulty of fitting a specific fuse holder into a Lucas switchbox and the storage of spares. | 1st Jul 1921 | Box 61 \ 2 scan0453 | |
| Unreliability of Lucas dynamos and considering alternative strategies including purchasing American parts. | 2nd Jul 1921 | Box 61 \ 2 scan0454 | |
| Reliability of electrical components like fuses and graphite parts, referencing a prior committee report. | 2nd Jul 1921 | Box 61 \ 2 scan0455 | |
| Extract discussing difficulties with Lucas over fuse holder design and fuse wire materials. | 7th Jul 1921 | Box 61 \ 2 scan0456 | |
| Response from Lucas Electrical Co. Ltd. regarding modifications to a fuse holder for a switchbox. | 8th Jul 1921 | Box 61 \ 2 scan0457 | |
| Agreeing to alter the centres of the fuse holder for the switch box. | 9th Jul 1921 | Box 61 \ 2 scan0458 | |
| Extract from a letter from the Lucas Company regarding the application of a fuse holder to a switch box. | 11th Jul 1921 | Box 61 \ 2 scan0459 | |
| Report of a visit to Lucas Electrical Company regarding fuses and design changes for a 40/50 switchbox. | 12th Jul 1921 | Box 61 \ 2 scan0460 | |
| Letter to Lucas Electrical Co. Ltd. regarding the appropriate gauge of fuse wire for fuse holders and switchboxes. | 13th Jul 1921 | Box 61 \ 2 scan0461 | |
| Letter discussing the operational conditions of a dynamo when run with the battery disconnected. | 10th Dec 1920 | Box 61 \ 2 scan0462 | |
| Fuses and fuse holders, comparing the R.R. type with the Lucas type and the provision of spares. | 15th Jul 1921 | Box 61 \ 2 scan0463 | |
| Proposal for a scheme of R.R. fuse holders and clips with two spare ready-loaded fuses. | 10th Dec 1920 | Box 61 \ 2 scan0464 | |
| Letter from Lucas Electrical Company regarding fuse wire tests, a wiring diagram for a 20 amp aircraft set, and other electrical components. | 19th Jul 1921 | Box 61 \ 2 scan0465 | |
| Test report on tinned copper fuse wire for a switchbox. | 21th Jul 1921 | Box 61 \ 2 scan0466 | |
| Letter from The Lucas Electrical Company regarding the supply and modification of E.575 dynamos for a 40-50 HP chassis. | 21th Jul 1921 | Box 61 \ 2 scan0467 | |
| Letter from a supplier discussing responsibility for defective cutouts and fuse holders. | 21th Jul 1921 | Box 61 \ 2 scan0468 | |
| An agreement with the Lucas Electrical Company on the size of tinned copper fuse wire. | 5th Aug 1921 | Box 61 \ 2 scan0469 | |
| Letter to the Lucas Electrical Company regarding the supply of fuse wire for their switchbox. | 5th Aug 1921 | Box 61 \ 2 scan0470 | |
| Letter from The Lucas Electrical Company Ltd. regarding a delay in response about fuse wire and clips. | 12th Aug 1921 | Box 61 \ 2 scan0471 | |
| Comparison of fusing currents for two different gauge copper wires. | 18th Aug 1921 | Box 61 \ 2 scan0472 | |
| Comparison of two different copper fuse wires, one standard and one tinned. | 19th Jun 1921 | Box 61 \ 2 scan0473 | |
| Query regarding a scheme for carrying spare ready-loaded fuses in the Goshawk distribution box. | 11th Apr 1922 | Box 61 \ 2 scan0474 | |
| The design of the Goshawk II distribution board cover and fuse wire supply. | 27th May 1922 | Box 61 \ 2 scan0475 | |
| Request for information on the material, thickness, and resistance load of fuse wire for car electrical installations and Lucas switchboards. | 11th Sep 1922 | Box 61 \ 2 scan0476 | |
| The correct fuse wire sizes for the electrical installation on the 40/50 car. | 12th Sep 1922 | Box 61 \ 2 scan0477 | |
| From R. to EFC. declining the use of fine fuses as they are considered too delicate. | 7th Nov 1923 | Box 61 \ 2 scan0478 | |
| The standardization of tinned or non-tinned fuse wire for the 40/50 and 20-HP chassis. | 8th Dec 1923 | Box 61 \ 2 scan0479 | |
| Testing of a 40 S.W.G. copper field fuse for the Goshawk dynamo and the need for a new fuse holder. | 12th Dec 1923 | Box 61 \ 2 scan0480 | |
| Use of tinned copper wire for Goshawk distribution box fuses. | 17th Dec 1923 | Box 61 \ 2 scan0481 | |
| Agreeing to use 30 SWG tinned copper fuse wire for the 20 HP chassis. | 11th Jan 1924 | Box 61 \ 2 scan0482 | |
| Faulty fuse carriers on the 20-HP model and suggesting improvements. | 28th Jan 1924 | Box 61 \ 2 scan0483 | |
| Query regarding the current draw and fusing safety of adding multiple auxiliary electrical fittings to a single circuit. | 1st Mar 1927 | Box 61 \ 2 scan0484 | |
| Technical discussion on the implications of extra electrical fittings and the appropriate fusing currents for car electrical systems. | 14th Mar 1927 | Box 61 \ 2 scan0485 | |
| Requesting a copy of the document be sent to the undersigned. | 4th Mar 1927 | Box 61 \ 2 scan0486 | |
| Clarifying the electrical connections for a cutout, green lamp switch coil, and green lamp. | 26th Jul 1928 | Box 61 \ 2 scan0487 | |
| Dynamo fuse failures, cutout shunt coils, and the function of the danger lamp. | 24th Jul 1928 | Box 61 \ 2 scan0488 | |
| The failure of a field fuse due to cumulative oxidation and potential solutions. | 24th Jul 1928 | Box 61 \ 2 scan0489 | |
| The wiring connections for the green lamp switch unit and Klaxon horn. | 24th Jul 1928 | Box 61 \ 2 scan0490 | |
| Electrical arrangement proposals, focusing on a dynamo field resistance unit to control battery overcharging. | 19th Sep 1928 | Box 61 \ 2 scan0491 | |
| Fusing current for main and distributing fuses and the specifications for ammeters. | 19th Sep 1928 | Box 61 \ 2 scan0492 | |
| Table of fusing currents for different gauges of copper wire. | 19th Sep 1928 | Box 61 \ 2 scan0493 | |
| Experimental testing of car electrical system faults and specific earthing issues. | 21th Sep 1928 | Box 61 \ 2 scan0494 | |
| Specifications for fuse wire in the 'SS' electrical system, particularly concerning accessories. | 15th Nov 1928 | Box 61 \ 2 scan0495 | |
| Dangerous alteration to the EAC.10 distribution board's main battery fuse. | 30th Nov 1928 | Box 61 \ 2 scan0496 | |
| Dangers of modifying the main fuse holder and recommending the original arrangement be retained. | 17th May 1929 | Box 61 \ 2 scan0497 | |
| Table of fusing currents for different gauges of copper wire. | 17th May 1929 | Box 61 \ 2 scan0498 | |
| Suggesting a demonstration for the new pattern Nivex Gauge from Nivex Gauge Ltd., Manchester. | 31th Jan 1930 | Box 61 \ 3 scan0001 | |
| Letter discussing various automotive components including petrol gauges, Phantom II rear brakes, valve springs, and tyres. | 13th Feb 1930 | Box 61 \ 3 scan0002 | |
| Methods to dampen axle movement and reduce radiator dither. | 13th Feb 1930 | Box 61 \ 3 scan0003 | |
| Cover note attaching a copy of a letter and blueprint from Messrs. Nivex Gauge Ltd., Manchester. | 13th Feb 1930 | Box 61 \ 3 scan0004 | |
| Copy of a letter from Nivex Gauge Limited regarding a drawing and order for a gauge. | 19th Feb 1930 | Box 61 \ 3 scan0005 | |
| Confirming receipt of a letter and sample gauge from The Nivex Gauge Ltd. | 19th Feb 1930 | Box 61 \ 3 scan0006 | |
| Letter from Nivex Gauge Limited regarding a petrol gauge suitable for a 40/50-HP petrol tank. | 15th Feb 1930 | Box 61 \ 3 scan0007 | |
| Letter to The Nivex Gauge Co. Ltd. regarding the calibration and fitting of a gauge and tank unit. | 24th Feb 1930 | Box 61 \ 3 scan0008 | |
| From ROY to Hs. discussing the potential replacement of the Hobson Gauge with a Nivex Gauge to achieve cost savings and resolve quality issues. | 25th Feb 1930 | Box 61 \ 3 scan0009 | |
| Letter from Nivex Gauge Limited chasing the return of a gauge head and tank fitting. | 27th Feb 1930 | Box 61 \ 3 scan0010 | |
| Despatch instruction for a gauge head and tank unit to The Nivex Gauge Co. Ltd. | 24th Feb 1930 | Box 61 \ 3 scan0011 | |
| Letter to The Nivex Gauge Co. Ltd. objecting to rubber connections on a gauge head and tank unit for a 40/50 car. | 12th Mar 1930 | Box 61 \ 3 scan0012 | |
| Letter from Nivex Gauge Limited regarding a special order for gauges with metal unions. | 13th Mar 1930 | Box 61 \ 3 scan0013 | |
| Letter to the Nivex Gauge Co. Ltd requesting a specimen of metal connections for testing. | 14th Mar 1930 | Box 61 \ 3 scan0014 | |
| Test report on the graduation and accuracy of a Nivex petrol gauge on a 23EX petrol tank. | 19th Mar 1930 | Box 61 \ 3 scan0015 | |
| Letter from Nivex Gauge Limited regarding a specimen of Metal to Metal Connections. | 17th Mar 1930 | Box 61 \ 3 scan0016 | |
| Letter from Nivex Gauge Limited regarding a smaller pattern gauge with metal-to-metal connections for approval. | 19th Mar 1930 | Box 61 \ 3 scan0017 | |
| Potential supplier's quote and product quality for an indicator and tank fitment. | 28th Mar 1930 | Box 61 \ 3 scan0018 | |
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