How Much Square Wire Is Used for Explosion-Proof Lights

A 200-watt explosion-proof light requires a 0.75mm² wire for connection, adhering strictly to national standards.

Typically, to ascertain the necessary current for an explosion-proof light, you calculate by dividing its power by a standard voltage of 220V, thus determining the appropriate rated current.

Consider this: a 1mm² copper core wire is capable of carrying a 6A current, equating to 6A*220V=1320W. Therefore, light fixtures with power ratings below 1320W are compatible with a 1mm² pure copper wire. However, to account for potential wire aging and heat issues, a 1.5mm² wire is commonly preferred.

As per the GB4706.1-1992/1998 standards, the partial electrical wire load current values are as follows:

A 1mm² copper core wire supports a long-term load current of 6-8A.
A 1.5mm² copper core wire supports a long-term load current of 8-15A.
A 2.5mm² copper core wire supports a long-term load current of 16-25A.
A 4mm² copper core wire supports a long-term load current of 25-32A.
A 6mm² copper core wire supports a long-term load current of 32-40A.