Hobbyists & Industry luminaries alike learn on every visit
(we earn from 'affiliate link' purchases)

Curated with aloha by
Ted Mooney, P.E. RET

finishing.com -- The Home Page of the Finishing Industry

  The authoritative public forum
  for Metal Finishing 1989-2025

-----

Bolts and nuts for Electrical Termination in outdoor use

Q. Can any expert explain the galvanized BOLTS and Nuts can be used for Electrical Termination in outdoor use? Please suggest I am in urgent need of this answer.

Velusamy Narayanasamy
user - Qatar
July 15, 2009

A. For outdoor use, I don't recommend galvanized nuts and bolts for electrical connections.
Reason: the zinc forms insulating oxides which will give you a high resistance connection. If you are carrying high current through this connection, you'll get overheating. If its a high voltage, you'll get arcing. If both V & A are high you could get a fire! Arcing on a zinc connection is not good, you'll get burning of the unoxidized zinc, giving off fumes of ZnOxide.

You could try brass.

Geoff Crowley
Crithwood Ltd.
Westfield, Scotland, UK

July 22, 2009

Q. Can we use Stainless Steel bolt for termination @ secondary side of Pad Mounted MV Transformer (e.g 500KVA/13.8-0.480/0.277KV) for outdoor installation?

Ulysses Bustillo
- Saudi Arabia
December 20, 2011

adv.
this text gets replaced with bannerText

(No "dead threads" here! If this page isn't currently on the Hotline your Q, A, or Comment will restore it)

Q, A, or Comment on THIS thread -or- Start a NEW Thread

Disclaimer: It's not possible to fully diagnose a finishing problem or the hazards of an operation via these pages. All information presented is for general reference and does not represent a professional opinion nor the policy of an author's employer. The internet is largely anonymous & unvetted; some names may be fictitious and some recommendations might be harmful.

If you are seeking a product or service related to metal finishing, please check these Directories: