Cable, Lugs & Crimping Tools

DC Cable Sizing Tool

This online cable size calculator tool makes it easy to establish the correct size of cables for any DC power system. 

DC Wire Sizing Calculator - Round your results up to the next cable size

Cable sizes: 'Free Air cables' can carry the following Amps (cables in conduit or insulated walls will reduce the Amps you can put through the cable).  The table below shows our recommended max amps to put though the DC solar and battery cable sizes we supply in free Air and in ducting, if in insulated walls you will need to reduce further.  The amount in brackets is the absolute max and must never be exceeded. The 6mm and 10mm refer to solar cable. The remaining sizes refer to battery cable.

Cable Size

Max Amps in Free Air

In Duct

Volt Drop 

Ohms/KM

6mm²

70A

 

3.39

10mm²

98A

 

1.95

16mm²

94A (115Max)

80A (91Max)

2.9

35mm²

150A (188Max)

115A (139Max)

1.35

50mm²

190A (228Max)

140A (164Max)

0.98

70mm²

260A (291Max)

180A (203Max)

0.67

95mm²

325A (354Max)

200A (239Max)

0.49

The information contained within this table is for guidance only and is subject to change without notice or liability. All the information is provided in good faith and is believed to be correct at the time of publication. When selecting cable accessories, please note that actual cable dimensions may vary due to manufacturing tolerances.

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10mm flat pin lug, heavy duty tinned copper terminal
Availability: In Stock - Delivery 1-3 days or collect from near Lewes
Price:
£0.88 +vat
£1.05
16mm flat pin lug, heavy duty tinned copper terminal
Availability: In Stock - Delivery 1-3 days or collect from near Lewes
Price:
£0.98 +vat
£1.17
25mm flat pin lug, heavy duty tinned copper terminal
Availability: In Stock - Delivery 1-3 days or collect from near Lewes
Price:
£1.07 +vat
£1.29
35mm flat pin lug, heavy duty tinned copper terminal
Availability: In Stock - Delivery 1-3 days or collect from near Lewes
Price:
£1.17 +vat
£1.40
6mm cable end lug, 10mm hole, heavy duty copper tube terminal
Availability: In Stock - Delivery 1-3 days or collect from near Lewes
Price:
£0.16 +vat
£0.19
6mm cable end lug, 6mm hole, heavy duty copper tube terminal
Availability: In Stock - Delivery 1-3 days or collect from near Lewes
Price:
£0.16 +vat
£0.19
6mm cable end lug, 8mm hole, heavy duty copper tube terminal
Availability: In Stock - Delivery 1-3 days or collect from near Lewes
Price:
£0.16 +vat
£0.19
6mm flat pin lug, heavy duty tinned copper terminal
Availability: In Stock - Delivery 1-3 days or collect from near Lewes
Price:
£0.78 +vat
£0.94
6mm Solar Cable - per meter
Availability: In Stock - Delivery 1-3 days or collect from near Lewes
Price:
£1.67 +vat
£2
Crimping tool for Battery terminal lugs 6mm² - 50mm² for crimping - Entry level crimping tool
Availability: In Stock - Delivery 1-3 days or collect from near Lewes
Price:
£33.33 +vat
£40
Titan 1800W Electric heat gun 240V
Availability: In Stock - Delivery 1-3 days or collect from near Lewes
Price:
£20.83 +vat
£25
6mm Solar Cable - 50 Meter Reel/Drum
Availability: In Stock - Delivery 1-3 days or collect from near Lewes
Price:
£57.50 +vat
£69
6mm Solar Cable - 100 Meter Reel/Drum
Availability: In Stock - Delivery 1-3 days or collect from near Lewes
Price:
£112.50 +vat
£135
230V 16A to 13A Fly Lead Converter
Availability: In Stock - Delivery 1-3 days or collect from near Lewes
Only 4 Left in stock
Price:
£12.50
£8.00 +vat
£9.60
10mm cable end lug, 10mm hole, heavy duty copper tube terminal
Availability: In Stock - Delivery 1-3 days or collect from near Lewes
Price:
£0.29 +vat
£0.35
10mm cable end lug, 6mm hole, heavy duty copper tube terminal
Availability: In Stock - Delivery 1-3 days or collect from near Lewes
Price:
£0.29 +vat
£0.35
10mm cable end lug, 8mm hole, heavy duty copper tube terminal
Availability: In Stock - Delivery 1-3 days or collect from near Lewes
Price:
£0.29 +vat
£0.35
10mm Solar Cable - per meter
Availability: In Stock - Delivery 1-3 days or collect from near Lewes
Price:
£2.92 +vat
£3.50
Extension Lead 16A 230V 14m
Availability: In Stock - Delivery 1-3 days or collect from near Lewes
Only 3 Left in stock
Price:
£29.17
£20.83 +vat
£25