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| SERVICE | DELIVERY PRICE | DELIVERY TIME |
|---|---|---|
| Standard Delivery | £29.99 | 7 to 10 working days |
| SERVICE | DELIVERY PRICE | DELIVERY TIME |
|---|---|---|
| Standard Delivery | £29.99 | 7 to 10 working days |
| SERVICE | DELIVERY PRICE | DELIVERY TIME |
|---|---|---|
| Standard Delivery | £4.99 | 2 to 3 working days |
| Next Day | £17.95 |
| SERVICE | DELIVERY PRICE | DELIVERY TIME |
|---|---|---|
| Standard Delivery | £29.99 | 5 to 7 working days |
| SERVICE | DELIVERY PRICE | DELIVERY TIME |
|---|---|---|
| Standard Delivery | £29.99 | 7 to 10 working days |
Product Number: 79409
The Draper 79409 earth clamp. FIT 300A 1. Compatible across the draper welding, draper earth clamps welding range — check product specifications for exact model fit. Also known as welding earth clamp or ground clamp in welding supplies catalogues.
Additional Information:
EARTH CLAMP D-FIT 300A 1.5MAbout PartsForMachines:
PartsForMachines is a premier e-commerce platform, founded in 2019 in Warwickshire, UK, specializing in aftermarket parts and services for construction, agriculture, and industrial machinery. We offer an extensive catalog of over 500,000 products. Standard delivery: 1–3 working days within UK mainland. We are proud to be an authorised distributor, giving customers extra confidence when purchasing genuine products from us. In addition, we provide a 30-day return policy for eligible items.
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Standard Delivery: £4.99
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Delivery Estimate: 2 to 3 working days
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| Technical Specification | |||||
|---|---|---|---|---|---|
| PRODUCT NUMBER | 11951 | 14027 | 07648 | 07649 | 09550 |
A. The Draper 79409 is rated at 300A, which is sufficient for most MIG, TIG, and ARC welding applications at that output level. Always ensure your earth clamp rating meets or exceeds your machine's maximum output current.
A. Universal earth clamp compatible with all welding machines in the PartsForMachines range including SIP, Sealey, Draper, Clarke, CROSARC and TIGREN. Check connector type matches your machine's earth socket.
A. Attach as close to the weld as possible on clean, bare metal. Remove paint, rust, or mill scale at the contact point — even a thin film of oxide increases resistance. Avoid clamping to welding tables or fixtures that are not electrically connected to the workpiece — current will find an alternative path, which can damage bearings or electronic components nearby.
A. The earth clamp completes the welding circuit. A poor connection creates resistance which manifests as arc instability, excessive spatter, and inconsistent penetration — all often mistaken for a machine fault or incorrect settings. Before adjusting machine settings, always check the earth clamp connection first. A 300A rated Draper clamp like the 79409 provides a low-resistance path for the full welding current.
A. Overheating means either the clamp is undersized for your current draw, the contact point has poor connection (paint, rust, or weak spring pressure), or the cable is damaged or undersized. The Draper 79409 is rated at 300A — if you're regularly welding at or above this level, upgrade to a higher-rated clamp.
A. Check the product specification for cable length and conductor size. Earth cable cross-section should match or exceed the welding current — undersized cable creates resistance and overheats. If your machine came with a cable and you're replacing the clamp only, ensure the new clamp's connector matches your existing cable termination.
A. Yes — the Draper 79409 earth clamp can be used on aluminium workpieces. Aluminium's oxide layer creates contact resistance, so scratch through the oxide at the clamping point before attaching. A larger jaw capacity improves contact on aluminium extrusions and plate.
A. The Draper 79409 connects to your welder's earth (negative) socket via the cable connector. Most modern inverter welders use a Dinse or twist-lock connector. Check your machine's earth socket type before ordering — the connector type is listed in the product specification.
A. Pre-weld cleaning removes rust, paint, oil, and mill scale that cause porosity, weak fusion, and spatter. Post-weld cleaning removes slag and discolouration for inspection and appearance. A wire brush is the most common tool — use stainless steel brushes on stainless steel to avoid contamination, and carbon steel brushes on mild steel.
A. Universal earth clamp compatible with all welding machines in the PartsForMachines range including SIP, Sealey, Draper, Clarke, CROSARC and TIGREN. Check connector type matches your machine's earth socket. Confirm the connector type at the cable end matches your machine's earth socket — Dinse 35/50 or twist-lock are the most common types on Draper machines.
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