Intersystem Bonding Bridge

[pkelectrical]

The bridges listed for indoor/outdoor use are made of bronze. They also have a cover.

Like this:

http://www.primuscable.com/store/p/...514_a_7cGBB5&gclid=CPOLuZTJoMICFcpAMgodlEkAsQ

They have ones made out of zinc, that are almost half the price

http://www.primuscable.com/store/p/...4514_a_7cGB5&gclid=CP3k-JiMqcICFcFr7AodtRUAkA